@media screen and (max-width:992px)
{
    .x{
        border-top: 1px solid #dedede;
        border-bottom: 1px solid #dedede;
        height: 200px;
        

    }
    .phone{
        display: none;
    }
   

    .y{
        margin-top: 50px;
    }
   .z>li{
       text-align: center;
       
   }
   .fugaomax{
       display: none;
   }
   .yincang{
       display: none;
   }
 
}